Code cleanup and deduplication pass through weatherfeeder

internal/normalizers/nws/register.go

@@ -5,18 +5,13 @@ import (
 	fknormalize "gitea.maximumdirect.net/ejr/feedkit/processors/normalize"
 )
 
+var builtins = []fknormalize.Normalizer{
+	ObservationNormalizer{},
+	ForecastNormalizer{},
+	AlertsNormalizer{},
+}
+
 // Register appends NWS normalizers in stable order.
 func Register(in []fknormalize.Normalizer) []fknormalize.Normalizer {
-	out := in
-
-	// Observations
-	out = append(out, ObservationNormalizer{})
-
-	// Forecasts
-	out = append(out, ForecastNormalizer{})
-
-	// Alerts
-	out = append(out, AlertsNormalizer{})
-
-	return out
+	return append(in, builtins...)
 }